Measuring Cam Lift; Measuring Cam Height Of Fuel Injection Pump Camshaft; Inspecting Tappet; Measuring Clearance Between Tappet And Tappet Guide Hole - Mitsubishi Heavy Industries SL Series Service Manual

INSPECTION AND REPAIR OF BASIC ENGINE

3.6 Measuring cam lift

Measure the major axis of each cam. If it is less than the
limit, replace the camshaft with a new one.
Item
Cam height of camshaft
(major axis)
3.7 Measuring cam height of fuel injection
pump camshaft
Measure the cam height. Replace the camshaft if the height
is less than the limit.
Item
Cam height of fuel injection
pump camshaft (longer diameter)

3.8 Inspecting tappet

Inspect the cam contact surface of the tappets. Fit new
tappets if the surface is excessively worn or damaged.
3.9 Measuring clearance between tappet and
tappet guide hole
Measure clearance between the tappet and tappet hole.
Replace the tappet with a new one if the limit is exceeded.
Item
Clearance between tappet and tappet hole
6-10
Standard Limit
35.62 to 35.82 mm 34.72 mm
[1.4024 to 1.4102 in.] [1.3669 in.]
Standard Limit
43.9 to 44.1 mm 43 mm
[1.728 to 1.736 in.] [1.69 in.]
Limit
0.15 mm [0.0059 in.]
Measuring
points
Measuring
directions
Measuring camshaft cam height
Measuring
points
Measuring
directions
Measuring fuel injection pump camshaft cam height
Good Bad
Contact surface of tappet and cam
Measuring
points
Measuring clearance between tappet and
tappet guide hole
Bad
Measuring
directions